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A Marvel NFT comic drop date is not the same object as a printed-issue ship date. Printed comics often carry a cover month that never matches the Wednesday a shop received the box. Digital drops usually carry a clock, but that clock is published against a marketplace timezone that is not Bangkok.
Toolkit Flow Core starts with the public listing. If the listing names a day and hour, we convert that hour to Indochina Time and keep the source timezone in a neighbouring cell so a reader can reverse the conversion. If the listing names only a day, we refuse to invent 19:00 ICT just to make the grid look complete.
Promotional artwork is treated as decoration, not as a date. A teaser image posted on Monday does not move a Friday window. When a publisher restates a window, the calendar keeps both the old line (struck as superseded) and the new line, because collectors who screenshotted the first hour still need to see why their reminder fired empty.
Reprint language belongs next to the title. Many Marvel NFT drops restage older paper stories. Dating the file without saying “reprint” leads people to treat a 1970s plot as a 2026 first appearance. Our past drop archives exist for that confusion.
None of this is trading advice. A date is a bibliographic fact. Floor prices belong on marketplaces, not on a calendar desk.